EP0097165A1 - Trailer for a truck. - Google Patents

Trailer for a truck.

Info

Publication number
EP0097165A1
EP0097165A1 EP82903290A EP82903290A EP0097165A1 EP 0097165 A1 EP0097165 A1 EP 0097165A1 EP 82903290 A EP82903290 A EP 82903290A EP 82903290 A EP82903290 A EP 82903290A EP 0097165 A1 EP0097165 A1 EP 0097165A1
Authority
EP
European Patent Office
Prior art keywords
trailer
truck
loading crane
support frame
horizontal axis
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82903290A
Other languages
German (de)
French (fr)
Other versions
EP0097165B1 (en
Inventor
Richard Palfinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Palfinger AG
Original Assignee
Palfinger AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Palfinger AG filed Critical Palfinger AG
Publication of EP0097165A1 publication Critical patent/EP0097165A1/en
Application granted granted Critical
Publication of EP0097165B1 publication Critical patent/EP0097165B1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/54—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using cranes for self-loading or self-unloading
    • B60P1/5471—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using cranes for self-loading or self-unloading the crane being detachable from the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D53/00—Tractor-trailer combinations; Road trains
    • B62D53/04—Tractor-trailer combinations; Road trains comprising a vehicle carrying an essential part of the other vehicle's load by having supporting means for the front or rear part of the other vehicle

Definitions

  • the invention relates to a trailer for a truck, with a support frame for a loading crane or the like, the trailer being optionally articulated and rigidly connectable to the truck.
  • AT-A-186 392 which is supported by means of at least one rear-facing, fixed in the working position by a holding device from above and fixed swivel arm on a transverse to the vehicle direction articulated axis has been proposed.
  • the jockey wheel allows only slight displacements of the vehicle at the place of use and does not solve the second problem that arises from the arrangement of a loading crane in the rear area of the vehicle. This is due to the fact that the weight of the crane of the order of 1-2 t increases the axle pressure on the rear wheels to an unacceptable extent and relieves the front wheels particularly when driving uphill.
  • the object of the invention is to provide a trailer of the type outlined at the outset which is simple in construction and whose wheels in the working position also rest firmly on uneven ground without the bumps in the ground tipping the towing vehicle cause moment.
  • the supporting frame for the loading crane can be pivoted about a vertical axis and a transverse horizontal axis relative to a fastening device which is rigidly but releasably connectable to the end part of the truck, and that devices for blocking the pivoting device movement are provided at least about the horizontal axis.
  • connection of the trailer to the end part of the truck is therefore always carried out in the manner known, for example, from FR-A-2320208 or in a more elegant form from AT-A-315 422.
  • the trailer can be swiveled relative to its part rigidly attached to the end part of the truck.
  • the wheels run after the truck.
  • an angle is formed between the truck and trailer in the usual way. Due to the horizontal swiveling of the support frame for the loading crane, the wheels attached to it can also follow larger uneven floors.
  • the fixation of the support frame relative to the truck which is essential in the operating state, can thus also take place in a position in which the base of the support frame does not run completely parallel to that of the truck.
  • FIG. 2 shows a plan view of a trailer according to the invention
  • Fig. 3 outlines the associated hydraulic circuit diagram.
  • FIGS. 1 and 2 The trailer shown in FIGS. 1 and 2 is for this purpose
  • OMPI true on the support frame 1, the details of which are not important here, in particular to accommodate a loading crane.
  • the trailer should be able to be brought to the place of use of the loading crane by a truck, and during the functioning of the loading crane a tipping of the trailer should be prevented by a rigid connection between the trailer and the truck.
  • the type of connection between the trailer and the truck is therefore decisive for the function of the device shown.
  • the truck For connection to the trailer, the truck, not shown, only has a vertical set-up plate 2.
  • the holding device of the trailer engages in this at the top with holding claws 26 and at the bottom with claws 19.
  • the claws 19 can be opened and closed by means of a spindle via an actuating lever 20, so that the trailer can optionally be rigidly connected to the truck. or is detachable from this.
  • an axle pin 21 is mounted in the plates 31 and 32 of the fastening device, about which the plate 33 can be pivoted horizontally.
  • a bracket 23 for a hydraulic unit 5 is fastened by means of a nut 22, so that the hydraulic unit 5, the function of which will be explained later, can take part in the movement of the trailer about the vertical axis 3.
  • the uniaxial trailer itself consists of the supporting frame 1, the suspension 16 and two wheels 18 mounted on the wheel axle 17 and, in this respect, has no special features essential to the invention. It is essential that the support frame 1 carried by the wheels 18 can be pivoted about a transverse horizontal axis 4 and that this pivoting movement in the working position of the loading crane can be blocked.
  • the hydraulic unit 5 serves this purpose, which is articulated at points 24 and 25 on the one hand on the holding plate 23 and on the other hand on the support frame 1. If the shut-off valve 15 is closed, the mutual position of the parts of the hydraulic unit 5 is fixed and the support frame 1 is rigidly connected to the end of the motor vehicle so that it can absorb the moments exerted by the loading crane together with the wheels 18.
  • the horizontal pivoting movement of the trailer can also be prevented, which is particularly advantageous for reversing.
  • the trailer is provided with hydraulic units 8, 8 *, which at points 28, 28 'and 29, 29' on the one hand on the fastening device, namely on shafts extending between the plates 31 and 32, on the other hand on the horizontal , pivotable plate 33 are articulated.
  • 3 shows the shifting processes by which the various functions of the trailer coupling according to the invention can be achieved; 3 corresponds to that in relation to the hydraulic units 8, 8 '. State in which horizontal movement of the trailer is blocked. Since the switch 14 is open, no oil can flow out of the cylinder 10 and the piston 9 is immobile. The same applies to the cylinders 10 * and the piston 9 ', because of the arrangement of the check valve 12. In order to enable the horizontal movement of the trailer, it is sufficient to actuate the switch 14, whereupon between the cylinders 10 and 10'
  • Pressure oil can be exchanged so that the movement of the pistons 9, 9 'and thus the movement of the plate 33 or of the trailer is no longer impeded.
  • shut-off valve 15 When the trailer moves forward, the shut-off valve 15 is open, and the hydraulic fluid is therefore present on both sides of the piston 6 of the hydraulic unit 5, with which the latter can perform a damped movement in the cylinder 7. If, on the other hand, the shut-off valve 15 is closed, the piston 6 becomes immobile, since the shut-off valve 15 prevents the hydraulic fluid from flowing out of the space in front of the piston and the check valve 11 from the space behind it.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Jib Cranes (AREA)
  • Vehicle Body Suspensions (AREA)
  • Steering-Linkage Mechanisms And Four-Wheel Steering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

Le cadre porteur (1) pour la grue d'un camion (2) est transporté sur un essieu, dont la mobilité en position de travail est supprimée. En position de travail le camion (2) est relié rigidement avec le cadre porteur (1) par des dispositifs hydrauliques (5, 8).The supporting frame (1) for the crane of a truck (2) is transported on an axle, the mobility of which in the working position is suppressed. In the working position, the truck (2) is rigidly connected to the supporting frame (1) by hydraulic devices (5, 8).

Description

Anhänger für einen Lastkraftwagen Trailer for a truck
Die Erfindung bezieht sich auf einen Anhänger für einen Lastkraftwagen, mit einem Traggestell für einen Lade¬ kran od. dgl., wobei der Anhänger wahlweise gelenkig und starr mit dem Lastkraftwagen verbindbar ist.The invention relates to a trailer for a truck, with a support frame for a loading crane or the like, the trailer being optionally articulated and rigidly connectable to the truck.
Charakteristik des bekannten Standes der TechnikCharacteristic of the known prior art
Bei der Befestigung eines Ladekrans am hinteren Ende eines Lastfahrzeuges können in zweierlei Hinsicht Probleme entstehen: zunächst ist einzusehen, daß durch die Betätigung des Ladekrans erhebliche Momente auf das Fahrzeug übertragen werden, zu deren Aufnahme es nicht eingerichtet ist. Allein die Lasten, die ein typischer Kran zu tragen vermag, liegen im Tonnenbereich und Schwenkmomente über 10 kNm sind durchaus üblich. Be¬ findet sich die Last vor der Kransäule, können solche Momente durchaus vom Fahrzeug selbst aufgenommen werden. Bei seitlicher Ausschwenkung entlasten üblicherweise seitlich ausfahrbare Tragholme das Fahrzeug. Zur Ab- Stützung der Fahrzeugkonsole nach hinten ist auch bereits (vgl. AT-A-186 392) ein Stützrad, das mittels mindestens eines nach hinten weisenden, in der ArbeitsStellung durch eine Halteeinrichtung von oben abgestützten und fixierten Schwenkarmes an einer quer zur Fahrzeug- richtung verlaufenden Achse angelenkt ist, vorgeschlagen worden. Das Stützrad erlaubt jedoch nur geringfügige Verschiebungen des Fahrzeuges am Einsatzort und löst nicht das zweite Problem, das durch die Anordnung eines Ladekrans im Heckbereich des Fahrzeuges entsteht. Dieses liegt darin, daß das Eigengewicht des Krans in der Größen¬ ordnung von 1 - 2 t den Achsdruck auf die Hinterräder in unzulässigem Ausmaß erhöht und besonders beim Bergauf¬ fahren die Vorderräder übermäßig entlastet. Diese letzt- genannte Schwierigkeit ist dafür verantwortlich, daß Ladekräne bisher von einem Anwendungsgebiet ausge¬ schlossen sind, für das sie an sich prädestiniert wären, nämlich von der Verwendung im Zusammenhang mit Fahrmischern für Beton. Zusätzlich zum Fahrmischer werden hier Förderbänder eingesetzt oder eigene Pump¬ wagen, die gesondertes Bedienungspersonal benötigen und damit gerade bei kleineren Bauvorhaben die Beton¬ kosten in die Höhe treiben. Hier könnten Ladekräne Ab- hilfe schaffen, deren Förderleistung von etwa 0,5 m3 Beton pro Hub eine hinreichend rasche Entladung zu variablen Endpunkten erlaubt und die vom Fahrer des Mischfahrzeuges betätigt werden könnten. Die Auslegung der Fahrmischer erfolgt nuii aber so, daß die zusätz- liehe Anbringung eines schweren Ladekrans am Fahrzeug¬ heck nicht ohne weiteres möglich ist.When attaching a loading crane to the rear end of a truck, problems can arise in two ways: First, it can be seen that the actuation of the loading crane transfers considerable moments to the vehicle, which it is not designed to accommodate. The loads that a typical crane is capable of carrying are in the tonne range and swivel torques above 10 kNm are quite common. If the load is in front of the crane column, such moments can certainly be recorded by the vehicle itself. When swiveling out to the side, the side rails that can be extended laterally relieve the vehicle. To support the vehicle console to the rear, there is also a support wheel (cf. AT-A-186 392), which is supported by means of at least one rear-facing, fixed in the working position by a holding device from above and fixed swivel arm on a transverse to the vehicle direction articulated axis has been proposed. The jockey wheel, however, allows only slight displacements of the vehicle at the place of use and does not solve the second problem that arises from the arrangement of a loading crane in the rear area of the vehicle. This is due to the fact that the weight of the crane of the order of 1-2 t increases the axle pressure on the rear wheels to an unacceptable extent and relieves the front wheels particularly when driving uphill. This last The difficulty mentioned is responsible for the fact that loading cranes have so far been excluded from an area of application for which they would in themselves be predestined, namely the use in connection with truck mixers for concrete. In addition to the truck mixer, conveyor belts are used here, or own pump trucks that require separate operating personnel and thus drive up the concrete costs, particularly in the case of smaller construction projects. This could be remedied by loading cranes, the delivery capacity of about 0.5 m 3 of concrete per stroke allows sufficiently rapid unloading to variable end points and which could be operated by the driver of the mixing vehicle. However, the truck mixers are so designed that the additional attachment of a heavy loading crane to the rear of the vehicle is not readily possible.
Aus dem Gesagten ergibt sich, daß ein Bedarf an An¬ hängern bestand, welche die wahlweise Mitnahme schwerer Ladekräne ermöglichen, ohne das Fahrverhalten des Zug- fahrzeuges wesentlich zu beeinträchtigen und welche bei stillstehendem Zugfahrzeug eine solide Unterlage für ein Arbeitswerkzeug, insbesondere für einen Ladekran, bilden. Ein solcher Anhänger mit den eingangs skizzier¬ ten Merkmalen wurde bereits in FR-A-2320208 vorge- schlagen. Dabei ist jedoch am Anhänger einerseits eine Konsole vorgesehen, welche in üblicher Weise starr mit dem Zugfahrzeug verbindbar ist, andererseits ein auszieh¬ barer Balken, der gelenkig in eine am Zugfahrzeug vor¬ gesehene Kupplung eingehängt werden kann, wenn die Kon- sole nicht mehr mit dem Zugfahrzeug verbunden ist. Die starre Verbindung von Konsole und Zugfahrzeug erfolgt hier immer in der gleichen Weise, ohne daß eine Möglich¬ keit bestünde, Bodenunebenheiten zu berücksichtigen. Es kann daher nicht darauf vertraut werden, daß die Räder des Anhängers in der Arbeitsphase als Stützen für die Konsole fungieren. Um ein Hochkippen des Vorderteiles des Zugfahrzeuges durch den arbeitenden Kran zu ver¬ hindern, müssen daher ausfahrbare Stützen vorgesehen werden, welche die Räder des Anhängers völlig entlasten. Die ganze Konstruktion wird daher so umständlich, daß sie in die Praxis keinen Eingang gefunden hat.It follows from what has been said that there was a need for trailers which would allow heavy loading cranes to be taken along without significantly impairing the driving behavior of the towing vehicle and which would provide a solid base for a working tool, in particular for a loading crane, when the towing vehicle was at a standstill. form. Such a trailer with the features outlined at the beginning has already been proposed in FR-A-2320208. However, a bracket is provided on the trailer on the one hand, which can be rigidly connected to the towing vehicle in the usual manner, and on the other hand an extendable bar which can be articulated in a coupling provided on the towing vehicle when the console is no longer included is connected to the towing vehicle. The rigid connection between the console and the towing vehicle is always carried out in the same way without there being a possibility of taking unevenness in the floor into account. It can therefore not be relied on that the wheels of the trailer in the work phase as supports for the Console act. In order to prevent the front part of the towing vehicle from tipping over due to the working crane, extendable supports must therefore be provided which completely relieve the wheels of the trailer. The whole construction is therefore so cumbersome that it has not found its way into practice.
Aufgabe der ErfindungObject of the invention
Aufgabe der Erfindung ist es, einen Anhänger der ein¬ gangs skizzierten Art zu schaffen, der einfach im Auf- bau ist und dessen Räder in der Arbeitsstellung auch auf unebenem Boden fest aufruhen, ohne daß die Boden¬ unebenheiten ein auf das Zugfahrzeug wirkendes Kipp¬ moment verursachen.The object of the invention is to provide a trailer of the type outlined at the outset which is simple in construction and whose wheels in the working position also rest firmly on uneven ground without the bumps in the ground tipping the towing vehicle cause moment.
Darlegung des Wesens der ErfindungState the nature of the invention
Die gestellte Aufgabe wird dadurch gelöst, daß das Trag¬ gestell für den Ladekran gegenüber einer mit dem Endteil des Lastkraftwagens starr, aber lösbar, verbindbaren Befestigungseinrichtung um eine vertikale Achse und eine quer verlaufende horizontale Achse verschwenkbar ist, und daß Einrichtungen zum Blockieren der Schwenk¬ bewegung zumindest um die horizontale Achse vorgesehen sind.The object is achieved in that the supporting frame for the loading crane can be pivoted about a vertical axis and a transverse horizontal axis relative to a fastening device which is rigidly but releasably connectable to the end part of the truck, and that devices for blocking the pivoting device movement are provided at least about the horizontal axis.
Gemäß der Erfindung erfolgt also die Verbindung des An¬ hängers mit dem Endteil des Lastkraftwagens immer in der etwa aus FR-A-2320208 oder in eleganterer Form aus AT-A-315 422 bekannten Weise. Während der Fahrt ist der Anhänger gegenüber seinem am Endteil des Lastkraftwagens starr befestigten Teil verschwenkbar, bei Vorwärtsfahrt laufen die Räder dem Lastkraftwagen nach, bei Rückwärts- fahrt bildet sich in üblicher Weise ein Winkel zwischen Lastkraftwagen und Anhänger. Durch die horizontale Schwenkbarkeit des Traggestelles für den Ladekran können die daran befestigten Räder auch größeren Bodenunebenheiten folgen. Die Fixierung des Traggestelles relativ zum Lastkraftwagen, die im Betriebszustand unerläßlich ist, kann damit auch in einer Lage erfolgen, in welcher der Boden des Tragge¬ stells nicht völlig parallel zu jenem des Lastkraft¬ wagens verläuft.According to the invention, the connection of the trailer to the end part of the truck is therefore always carried out in the manner known, for example, from FR-A-2320208 or in a more elegant form from AT-A-315 422. While driving, the trailer can be swiveled relative to its part rigidly attached to the end part of the truck. When driving forward, the wheels run after the truck. When driving backwards, an angle is formed between the truck and trailer in the usual way. Due to the horizontal swiveling of the support frame for the loading crane, the wheels attached to it can also follow larger uneven floors. The fixation of the support frame relative to the truck, which is essential in the operating state, can thus also take place in a position in which the base of the support frame does not run completely parallel to that of the truck.
Die Blockierung der Schwenkachse, welche es erlaubt, den Anhänger relativ zum Lastkraftwagen nach oben und unten zu verschwenken, kann auf verschiedene Weise er¬ folgen. Es wäre durchaus denkbar, daß im Betriebszu¬ stand des Ladekrans ein starrer Balken zwischen die sonst gegeneinander schwenkbaren Teile eingefügt wird, um die Schwenkbewegung zu unterbinden. Einfacher wird derselbe Effekt mittels einer blockierbaren Hydraulik¬ einheit erzielt, die anschließend anhand der Zeichnun¬ gen näher erläutert wird.The blocking of the swivel axis, which allows the trailer to be pivoted up and down relative to the truck, can take place in various ways. It would be quite conceivable that, in the operating state of the loading crane, a rigid beam is inserted between the parts which would otherwise be pivotable in order to prevent the pivoting movement. The same effect is more easily achieved by means of a lockable hydraulic unit which is subsequently explained in more detail on the basis of the drawings.
Beschreibung der ZeichnungsfigurenDescription of the drawing figures
In der Zeichnung wird ein Ausführungsbeispiel der Er¬ findung beschrieben, wobeiIn the drawing, an embodiment of the invention is described, wherein
Fig. 1 einen Vertikalschnitt durch die Längsmittelebene,1 is a vertical section through the longitudinal center plane,
Fig. 2 eine Draufsicht auf einen erfindungsgemäßen An¬ hänger darstellt, und2 shows a plan view of a trailer according to the invention, and
Fig. 3 das zugehörige hydraulische Schaltbild skizziert.Fig. 3 outlines the associated hydraulic circuit diagram.
Beschreibung des bevorzugten Aus- führungsbeispielsDescription of the preferred exemplary embodiment
Der in Fig. 1 und 2 dargestellte Anhänger ist dazu be-The trailer shown in FIGS. 1 and 2 is for this purpose
OMPI stimmt, auf dem Traggestell 1 , dessen Details hier nicht von Bedeutung sind, insbesondere einen Ladekran aufzunehmen. Der Anhänger soll von einem Lastfahrzeug an die Einsatzstelle des Ladekrans gebracht werden können, und während der Funktion des Ladekrans soll durch eine starre Verbindung zwischen Anhänger und Last¬ fahrzeug ein Kippen des Anhängers ausgeschlossen werden. Entscheidend für die Funktion der dargestellten Ein¬ richtung ist somit die Art der Verbindung zwischen Anhänger und Lastfahrzeug.OMPI true, on the support frame 1, the details of which are not important here, in particular to accommodate a loading crane. The trailer should be able to be brought to the place of use of the loading crane by a truck, and during the functioning of the loading crane a tipping of the trailer should be prevented by a rigid connection between the trailer and the truck. The type of connection between the trailer and the truck is therefore decisive for the function of the device shown.
Zur Verbindung mit dem Anhänger weist das nicht darge¬ stellte Lastfahrzeug lediglich eine vertikale Rüst¬ platte 2 auf. In diese greift die Halteeinrichtung des Anhängers oben mit Haltepratzen 26 und unten mit Klauen 19 ein. Die Klauen 19 können über einen Betätigungshebel 20 mittels einer Spindel geöffnet und geschlossen werden, εodaß der Anhänger mit dem Lastfahrzeug wahlweise starr verbindbar . bzw. von diesem lösbar ist. Um ein seit¬ liches Ausschwenken des Anhängers zu ermöglichen, ist in den Platten 31 und 32 der Befestigungsvorrichtung ein Achszapfen 21 gelagert, um welchen die Platte 33 horizontal verschwenkbar ist. Am oberen Ende des Achs¬ zapfens 21 ist mittels einer Mutter 22 eine Halterung 23 für eine Hydraulikeinheit 5 befestigt, damit die Hydraulikeinheit 5, deren Funktion später erläutert wird, die Bewegung des Anhängers um die vertikale Achse 3 mitmachen kann.For connection to the trailer, the truck, not shown, only has a vertical set-up plate 2. The holding device of the trailer engages in this at the top with holding claws 26 and at the bottom with claws 19. The claws 19 can be opened and closed by means of a spindle via an actuating lever 20, so that the trailer can optionally be rigidly connected to the truck. or is detachable from this. In order to enable the trailer to be pivoted out to the side, an axle pin 21 is mounted in the plates 31 and 32 of the fastening device, about which the plate 33 can be pivoted horizontally. At the upper end of the journal 21, a bracket 23 for a hydraulic unit 5 is fastened by means of a nut 22, so that the hydraulic unit 5, the function of which will be explained later, can take part in the movement of the trailer about the vertical axis 3.
Der einachsige Anhänger selbst besteht aus dem Tragge¬ stell 1, der Federung 16 und zwei auf der Radachse 17 gelagerten Rädern 18 und weist insofern keine erfindungs¬ wesentlichen Besonderheiten auf. Wesentlich ist, daß das von den Rädern 18 getragene Traggestell 1 um eine quer verlaufende horizontale Achse 4 schwenkbar ist und daß diese Schwenkbewegung in der Arbeitsstellung des Lade- krans blockiert werden kann. Diesem Zweck dient die Hydraulikeinheit 5, die in den Punkten 24 und 25 einer¬ seits an der Halteplatte 23,andererseits am Traggestell 1 angelenkt ist. Wird der Absperrhahn 15 geschlossen, so ist die gegenseitige Stellung der Teile der Hydraulik¬ einheit 5 fixiert und das Traggestell 1 ist mit dem Ende des Kraftfahrzeuges starr verbunden, sodaß dieses zusammen mit den Rädern 18 die vom Ladekran ausgeübten Momente aufnehmen kann.The uniaxial trailer itself consists of the supporting frame 1, the suspension 16 and two wheels 18 mounted on the wheel axle 17 and, in this respect, has no special features essential to the invention. It is essential that the support frame 1 carried by the wheels 18 can be pivoted about a transverse horizontal axis 4 and that this pivoting movement in the working position of the loading crane can be blocked. The hydraulic unit 5 serves this purpose, which is articulated at points 24 and 25 on the one hand on the holding plate 23 and on the other hand on the support frame 1. If the shut-off valve 15 is closed, the mutual position of the parts of the hydraulic unit 5 is fixed and the support frame 1 is rigidly connected to the end of the motor vehicle so that it can absorb the moments exerted by the loading crane together with the wheels 18.
Wie besonders aus Fig. 2 ersichtlich ist, kann auch die horizontale Schwenkbewegung des Anhängers unterbunden werden, was insbesondere für das Rückwärtsfahren vor¬ teilhaft ist. Der Anhänger ist zu diesem Zweck mit Hydraulikeinheiten 8,8* versehen, die an den Punkten 28, 28' und 29,29' einerseits an der Befestigungseinrichtung, nämlich an sich zwischen den Platten 31 und 32 erstrecken¬ den Schäften, andererseits an der horizontal, schwenkbaren Platte 33 angelenkt sind.As can be seen particularly from FIG. 2, the horizontal pivoting movement of the trailer can also be prevented, which is particularly advantageous for reversing. For this purpose, the trailer is provided with hydraulic units 8, 8 *, which at points 28, 28 'and 29, 29' on the one hand on the fastening device, namely on shafts extending between the plates 31 and 32, on the other hand on the horizontal , pivotable plate 33 are articulated.
Aus Fig. 3 ist ersichtlich, durch welche Schaltvorgänge die verschiedenen Funktionen der erfindungsgemäßen An¬ hängerkupplung erzielbar sind; Die Darstellung in Fig. 3 entspricht dabei in bezug auf die Hydraulikeinheiten 8,8' jenem. Zustand, in welchem eine horizontale Bewegung des Anhängers blockiert ist. Da der Schalter 14 unter- brochen ist, kann aus dem Zylinder 10 kein öl abfließen und der Kolben 9 ist unbeweglich. Dasselbe gilt für die Zylinder 10* und den Kolben 9' , wegen der Anordnung des Rückschlagventils 12. Um die horizontale Bewegung des Anhängers freizugeben, genügt es, den Schalter 14 zu be- tätigen, woraufhin zwischen den Zylindern 10 und 10'3 shows the shifting processes by which the various functions of the trailer coupling according to the invention can be achieved; 3 corresponds to that in relation to the hydraulic units 8, 8 '. State in which horizontal movement of the trailer is blocked. Since the switch 14 is open, no oil can flow out of the cylinder 10 and the piston 9 is immobile. The same applies to the cylinders 10 * and the piston 9 ', because of the arrangement of the check valve 12. In order to enable the horizontal movement of the trailer, it is sufficient to actuate the switch 14, whereupon between the cylinders 10 and 10'
Drucköl ausgetauscht werden kann, sodaß die Bewegung der Kolben 9,9' und damit die Bewegung der Platte 33 bzw.des Anhängers nicht mehr behindert ist.Pressure oil can be exchanged so that the movement of the pistons 9, 9 'and thus the movement of the plate 33 or of the trailer is no longer impeded.
O?,:PI Bei Vorwärtsfahrt des Anhängers ist der Absperrhahn 15 geöffnet, die Hydraulikflüssigkeit steht somit zu beiden Seiten des Kolbens 6 der Hydraulikeinheit 5 an, womit dieser im Zylinder 7 eine gedämpfte Bewegung ausführen kann. Schließt man hingegen den Absperrhahn 15, wird der Kolben 6 unbeweglich, da aus dem Raum vor dem Kolben der Absperrhahn 15, aus dem Raum hinter diesem das Rück¬ schlagventil 11 , ein Abfließen der Hydraulikflüssigkeit verhindern. O?,: PI When the trailer moves forward, the shut-off valve 15 is open, and the hydraulic fluid is therefore present on both sides of the piston 6 of the hydraulic unit 5, with which the latter can perform a damped movement in the cylinder 7. If, on the other hand, the shut-off valve 15 is closed, the piston 6 becomes immobile, since the shut-off valve 15 prevents the hydraulic fluid from flowing out of the space in front of the piston and the check valve 11 from the space behind it.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Anhänger für einen Lastkraftwagen, mit einem Trag¬ gestell für einen Ladekran od. dgl. , wobei der An¬ hänger wahlweise gelenkig und starr mit dem Last- kraftwagen verbindbar ist, dadurch gekennzeichnet, daß das Traggestell (1) für den Ladekran gegenüber einer mit dem Endteil (2) des Lastkraftwagens starr aber lösbar verbindbaren Befestigungseinrichtung um eine vertikale Achse (3) und eine quer verlaufende horizontale Achse (4) verschwenkbar ist, und daß Einrichtungen zum Blockieren der Schwenkbewegung zumindest um die horizontale Achse (4) vorgesehen sind.1. Trailer for a truck, with a support frame for a loading crane or the like, the trailer being optionally articulated and rigidly connectable to the truck, characterized in that the support frame (1) for the loading crane opposite one with the end part (2) of the truck rigidly but releasably connectable fastening device can be pivoted about a vertical axis (3) and a transverse horizontal axis (4), and that devices for blocking the pivoting movement are provided at least about the horizontal axis (4) .
2. Anhänger nach Anspruch 1, dadurch gekennzeichnet, daß zum Blockieren der Schwenkbewegung um die horizontale Achse (4) zwischen den gegeneinander schwenkbaren Teilen wenigstens eine Hydraulikein¬ heit (5) vorgesehen ist, bei welcher die gegen¬ seitige Lage von Kolben (6) und Zylinder (7) fixier- bar ist.2. Trailer according to claim 1, characterized in that for blocking the pivoting movement about the horizontal axis (4) between the mutually pivotable parts at least one hydraulic unit (5) is provided, in which the mutual position of the piston (6) and cylinder (7) can be fixed.
3. Anhänger nach Anspruch 1 oder 2, dadurch gekenn¬ zeichnet, daß. auch zwischen den relativ zueinander um die vertikale Achse (3) schwenkbaren Teilen des Anhängers wenigstens eine Hydraulikeinheit {8,8') vorgesehen ist, bei welcher die gegenseitige Lage von Kolben (9,9') und Zylinder (10,10*) fixierbar ist.3. Trailer according to claim 1 or 2, characterized gekenn¬ characterized in that. at least one hydraulic unit {8,8 ') is also provided between the parts of the trailer which can be pivoted relative to one another about the vertical axis (3), in which the mutual position of the piston (9.9') and cylinder (10.10 *) can be fixed is.
OMPI OMPI
EP82903290A 1981-12-24 1982-11-18 Trailer for a truck Expired EP0097165B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT5562/81 1981-12-24
AT556281 1981-12-24

Publications (2)

Publication Number Publication Date
EP0097165A1 true EP0097165A1 (en) 1984-01-04
EP0097165B1 EP0097165B1 (en) 1986-05-28

Family

ID=3577156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82903290A Expired EP0097165B1 (en) 1981-12-24 1982-11-18 Trailer for a truck

Country Status (10)

Country Link
US (1) US4558879A (en)
EP (1) EP0097165B1 (en)
JP (1) JPS58502142A (en)
AT (1) ATE20004T1 (en)
AU (1) AU551781B2 (en)
CA (1) CA1194514A (en)
DE (2) DE8237157U1 (en)
IT (2) IT1157985B (en)
NZ (1) NZ202883A (en)
WO (1) WO1983002258A1 (en)

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DE19508281A1 (en) * 1995-03-08 1996-09-12 Michael Brettnacher Crane-lorry combination with independent crane mounting
AT1824U1 (en) * 1996-09-25 1997-12-29 Brettnacher Michael COMBINED WORKING DEVICE FROM A TRUCK AND A WORKING CRANE
CA2792388C (en) 2011-10-10 2020-01-14 Wastequip, Llc Hoist apparatus
DE102018104320B4 (en) * 2018-02-26 2019-12-24 Krauss-Maffei Wegmann Gmbh & Co. Kg hitch
US11370498B1 (en) * 2019-01-30 2022-06-28 Quickthree Technology, Llc Booster axle and system for coupling booster axle to a payload

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US3342357A (en) * 1965-10-13 1967-09-19 Beloit Corp Self-loading skidder and stacker
AT272721B (en) * 1966-04-14 1969-07-25 Troester A J Fa Device for coupling one or both lower links of a three-point hitch of an agricultural implement to a tractor and / or for stabilizing or damping this link
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Also Published As

Publication number Publication date
ATE20004T1 (en) 1986-06-15
IT1157985B (en) 1987-02-18
NZ202883A (en) 1985-09-13
IT8254112V0 (en) 1982-12-23
DE8237157U1 (en) 1983-12-29
EP0097165B1 (en) 1986-05-28
IT8268508A0 (en) 1982-12-23
WO1983002258A1 (en) 1983-07-07
US4558879A (en) 1985-12-17
CA1194514A (en) 1985-10-01
AU551781B2 (en) 1986-05-08
JPS58502142A (en) 1983-12-15
DE3271456D1 (en) 1986-07-03

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